Geology in 90 Mins: Decide if you want to choose Geology as Optional (UPSC CSE and IFoS)

To join our Telegram group for Geology optional https://t.me/joinchat/wxjrhjaIE05kOTUx Join Gate Geology Coaching: GATE 2026 & GSI Pre + NET COURSE https://planet-geology.com/geology-ga... This video provides and overview of the geology discipline and various subjects. We will cover the overall geological history of the earth, what are the various subjects and how are they inter-related. Free Geology Optional Lectures (General Geology): https://learn.planet-geology.com/cour... Geology Optional Course: https://planet-geology.com/geology-op... Times Stamps: 00:00 Origin of Solar System 00:07:12 Formation of Earth and its Differentiation 00:18:21 Formation of Crust 00:27:04 Formation of Continental Crust 00:34:42 Tectonics, Metamorphism, Sedimentation and Structures 00:41:07 First Life on Earth (Start of Paleontology) 00:45:36 Invention of Photosynthesis and the Great Oxygenation Event 00:50:53 First Iron Oxides - the Banded iron Formations 00:58:13 Cambrian Explosion and Subsequent Mass Extinctions 01:06:14 Supercontinent Cycle 01:14:25 Ore Deposits 01:17:29 Stratigraphy 01:23:45 Summary of Subjects 01:26:39 Modern Age Geology Subjects